- Definitions|2
- Thesaurus|240
- Abbreviations|0
11 entries under impassable topic. ×
| obscure(solid, dense, unfathomable, impenetrable, unintelligible) | |
| arcane(adjective, obscure, solid, heavy, mysterious) | |
| baffling(adjective, obscure, solid, dense, unfathomable) | |
| incognizable(solid, dense, unfathomable, impenetrable, unintelligible) | |
| sibylline(solid, dense, unfathomable, impenetrable, unintelligible) | |
| unfathomable(solid, dense, impenetrable, unintelligible) | |
| ungraspable(solid, dense, unfathomable, impenetrable, unintelligible) | |
| unintelligible(solid, dense, unfathomable, impenetrable) | |
| unknowable(solid, dense, unfathomable, impenetrable, unintelligible) | |
| enigmatical(solid, dense, unfathomable, unintelligible) | |
| indiscernible(solid, dense, unfathomable, unintelligible) |
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| APA | Smart Define. (2013). delphic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/delphic/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "delphic thesaurus" https://smartdefine.org/delphic/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2013, delphic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/delphic/thesaurus/synonyms>. |
| MLA | Smart Define. "delphic thesaurus" 28 June 2013. Web. 25 September 2026. <https://smartdefine.org/delphic/thesaurus/synonyms> |